【摘要】 介绍了Richards增长曲线方程,而后对Richards增长曲线方程的参数进行研究.运用线性最小二乘法、双向差分误差平方和最小估计法和双向差分加权最小二乘估计法对其参数进行估计,从定量的角度研究了Richards增长曲线方程,为进一步的研究奠定了基础,最后将模型应用到传染病疫情实例中.更多还原

【Abstract】 In this paper,the Richards growth curve model is introduced and parameters estimation of Richards growth model is studied with least square method,minimum error square estimation of the two direction difference and the two direction difference weighted least square estimation. The Richards growth curve model is studied from the angle of quantification and the paper establishes the foundation to further research. Finally,the model is applied in an example of infectious disease.更多还原